87165501 has 8 divisors (see below), whose sum is σ = 117349440. Its totient is φ = 57545952.

The previous prime is 87165497. The next prime is 87165509. The reversal of 87165501 is 10556178.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87165501 - 2² = 87165497 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87165509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140736 + ... + 141353.

It is an arithmetic number, because the mean of its divisors is an integer number (14668680).

Almost surely, 2^87165501 is an apocalyptic number.

It is an amenable number.

87165501 is a deficient number, since it is larger than the sum of its proper divisors (30183939).

87165501 is a wasteful number, since it uses less digits than its factorization.

87165501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282195.

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 87165501 is about 9336.2466227066. The cubic root of 87165501 is about 443.3855584483.

The spelling of 87165501 in words is "eighty-seven million, one hundred sixty-five thousand, five hundred one".